MatLMVMSymBroydenScaleType#

Rescaling type for the initial Hessian of a symmetric Broyden matrix.

Synopsis#

typedef enum {
  MAT_LMVM_SYMBROYDEN_SCALE_NONE     = 0,
  MAT_LMVM_SYMBROYDEN_SCALE_SCALAR   = 1,
  MAT_LMVM_SYMBROYDEN_SCALE_DIAGONAL = 2,
  MAT_LMVM_SYMBROYDEN_SCALE_USER     = 3,
  MAT_LMVM_SYMBROYDEN_SCALE_DECIDE   = 4
} MatLMVMSymBroydenScaleType;

Values#

MAT_LMVM_SYMBROYDEN_SCALE_NONE - no rescaling
MAT_LMVM_SYMBROYDEN_SCALE_SCALAR - scalar rescaling
MAT_LMVM_SYMBROYDEN_SCALE_DIAGONAL - diagonal rescaling
MAT_LMVM_SYMBROYDEN_SCALE_USER - same as MAT_LMVM_SYMBROYDN_SCALE_NONE
MAT_LMVM_SYMBROYDEN_SCALE_DECIDE - let PETSc decide rescaling

See Also#

Matrices, MatLMVM, MatLMVMSymBroydenSetScaleType()

Level#

intermediate

Location#

include/petscksp.h

Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages